activity
20102025
most citedThe CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics

299 citations · 1k across the 11 of their papers we have counts for

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Showing astro-ph.GAShow all

6 papers · 1 filter

astro-ph.GA2024

The Detection of HO Maser Emission from mid-IR Red Galaxies

C. Y. Kuo, C. Y. Tai, A. Constantin +7

We report the detection of HO maser emission in 4 out of 77 (5.2%) mid-IR red galaxies that meet the color criteria of and and are classified as Type-…

astro-ph.GA2023

What Determines the Boundaries of H2O Maser Emission in an X-ray Illuminated Gas Disk ?

C. Y. Kuo, F. Gao, J. A. Braatz +7

High precision mapping of H2O megamaser emission from active galaxies has revealed more than a dozen Keplerian H2O maser disks, which enable a ~4% uncertainty estimate of the Hubbl…

astro-ph.GA2018★ 28 cited

The Megamaser Cosmology Project. X. High Resolution Maps and Mass Constraint for SMBHs

W. Zhao, J. A. Braatz, J. J. Condon +8

We present high resolution (sub-mas) VLBI maps of nuclear H2O megamasers for seven galaxies. In UGC6093, the well-aligned systemic masers and high-velocity masers originate in an e…

astro-ph.GA2017★ 22 cited

Enhancing the H2O Megamaser Detection Rate Using Optical and Mid-infrared Photometry

C. Y. Kuo, A. Constantin, J. A. Braatz +8

Water megamasers from circumnuclear disks in galaxy centers provide the most accurate measurements of supermassive black hole masses and uniquely probe the sub-parsec accretion pro…

astro-ph.GA2016★ 64 cited

The Megamaser Cosmology Project.IX. Black hole masses for three maser galaxies

F. Gao, J. A. Braatz, M. J. Reid +9

As part of the Megamaser Cosmology Project (MCP), we present VLBI maps of nuclear water masers toward five galaxies. The masers originate in sub-parsec circumnuclear disks. For thr…

astro-ph.GA2015★ 96 cited

The Megamaser Cosmology Project VIII. A Geometric Distance to NGC 5765b

F. Gao, J. A. Braatz, M. J. Reid +7

As part of the Megamaser Cosmology Project (MCP), here we present a new geometric distance measurement to the megamaser galaxy NGC 5765b. Through a series of VLBI observations, we…